2013191196http://ijc.iaush.ac.ir/article_4967_d1caae5f25631860a893c5169a3dbbed.pdfA new method for synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromenes using p-dodecylbenzenesulfonic acid as catalyst in waterEnayatollahSheikhhosseiniDepartment of Chemistry, Faculty of Science, Kerman Branch, Islamic Azad University, Kerman, Iran.authorDadkhodaGhazanfariDepartment of Chemistry, Faculty of Science, Kerman Branch, Islamic Azad University, Kerman, Iran.authorVidaNezamabadiDepartment of Chemistry, Faculty of Science, Kerman Branch, Islamic Azad University, Kerman, Iran.authortextarticle2013engp-Dodecylbenzenesulfonic acid (DBSA) was used as a catalyst for a simple and efficient one-pot synthesis of aryl substititued tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromens via initial Knoevenagel, subsequent Micheal and final heterocyclization reactions of aryl aldehyde, malononitrile and 4-hydroxycoumarin/dimedone in moderate to excellent yields. The present method was operationally simple and use of water as the reaction medium made the process environmentally benign.Iranian Journal of CatalysisIslamic Azad University, Shahreza Branch2252-02363

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2013197201http://ijc.iaush.ac.ir/article_4968_1281720bc2852319bd40aacba49d3098.pdfDecatungstodivanadogermanic heteropoly acid (H6GeW10V2O40.22H2O): A green and reusable heterogeneous catalyst for the synthesis of Biginelli-type 3,4-dihydropyrimidin-2-(1H)-ones/thionesSrinivasa RaoJettiLaboratory of Heterocycles, School of Studies in Chemistry & Biochemistry, Vikram University, Ujjain, Madhya Pradesh 456010, India.authorDivyaVermaLaboratory of Heterocycles, School of Studies in Chemistry & Biochemistry, Vikram University, Ujjain, Madhya Pradesh 456010, India.authorShubhaJainLaboratory of Heterocycles, School of Studies in Chemistry & Biochemistry, Vikram University, Ujjain, Madhya Pradesh 456010, India.authortextarticle2013engDecatungstodivanadogermanic acid (H6GeW10V2O40.22H2O) was used as a green heterogeneous catalyst for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones from one-pot three-component cyclocondensation reaction of a β-ketoester, an aldehyde and urea/thiourea under solvent-free conditions is reported. This method provides an efficient and much improved modification of the original Biginelli reaction reported in 1893, in terms of high yields, and short reaction times. It has the ability to allow a wide variety of substitutions in all three components.Iranian Journal of CatalysisIslamic Azad University, Shahreza Branch2252-02363

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2013203209http://ijc.iaush.ac.ir/article_4969_2d5be3664de75ae56ac713d01f926607.pdfMelamine trisulfonic acid (MTSA) as an efficient catalyst for the synthesis of triazolo[1,2-a]indazole-triones and some 2H-indazolo[2,1-b]phthalazine-trionesArdeshirKhazaeiFaculty of Chemistry, University of Bu-Ali Sina, 65178, Hamedan, Iran.authorMohammad AliZolfigolFaculty of Chemistry, University of Bu-Ali Sina, 65178, Hamedan, Iran.authorToktamFaal RastegarFaculty of Chemistry, University of Bu-Ali Sina, 65178, Hamedan, Iran.authorGholamabbasChehardoliSchool of Pharmacy, University of Medical Sciences, Hamedan 65178, Iran.authorShadpourMallakpourOrganic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, Iran.
Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan, Iran.authortextarticle2013engMelamine trisulfonic acid (MTSA) as an efficient heterogeneous catalyst has been used for the one-pot preparation of triazolo[1,2-a]indazole-1,3,8-trione and 2H-indazolo[2,1-b]phthalazine-1,6,11-trione derivatives by the three-component condensation reaction of urazoles or phthalhydrazide, dimedone or 1,3-cyclohexanedione, and aldehydes under solvent-free conditions in good to excellent yields and short reaction times.Iranian Journal of CatalysisIslamic Azad University, Shahreza Branch2252-02363

2013221228http://ijc.iaush.ac.ir/article_4971_a41b535ad50d102690f3c02fdf9979a6.pdfOne-pot synthesis of 2,4,5-trisubstituted imidazoles catalyzed by dicationic magnetic room temperature ionic liquidBijanMombani GodajdarDepartment of Chemistry, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran.authorAli RezaKiasatDepartment of Chemistry, College of Science, Shahid Chamran University, Ahwaz, Iran.authortextarticle2013engRegarding the green chemistry's goals, dicationic magnetic room temperature ionic liquid open up new avenue to introduce an amazing and efficient system for facilitating catalyst recovery in different organic reactions. Ability of this dicationic magnetic room temperature ionic liquid catalyst in the one-pot three-components condensation reaction of benzil, aromatic aldehyde, and ammonium acetatate are also described. Utilization of easy reaction conditions, catalyst with high catalytic activity and good reusability, and simple magnetically work-up, makes this methodology as an interesting option for the synthesis of 2,4,5-trisubstituted imidazoles.Iranian Journal of CatalysisIslamic Azad University, Shahreza Branch2252-02363

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2013229235http://ijc.iaush.ac.ir/article_4972_b7bacd3d409535707d1e53e315151e8c.pdf[Et3NH][HSO4] catalyzed one-pot synthesis of 14-aryl-14H-dibenzo[a,j] xanthenes under solvent-free conditionsZhongqiangZhouCollege of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, P. R. China.authorXiaocuiDengCollege of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, P. R. China.authorXiaoyunHuCollege of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, P. R. China.authortextarticle2013engA simple and environmentally benign procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes by a one-pot condensation of 2-naphthol with aromatic aldehyde in the presence of [Et3NH][HSO4] as an acidic ionic liquid catalyst under solvent-free conditions has been developed. The reaction work-up is very simple and the catalyst can be easily separated from the reaction mixture and reused several times in subsequent reactions.Iranian Journal of CatalysisIslamic Azad University, Shahreza Branch2252-02363

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2013237242http://ijc.iaush.ac.ir/article_4973_efa67016a901de2388942d1f84d31c05.pdfFacile and mild synthesis of 1-substituted-1H-1,2,3,4-tetrazoles catalyzed by methanesulfonic acid under solvent-free conditionsHosseinNaeimiDepartment of Organic Chemistry, Faculty of Chemistry, University of Kashan, P.O. Box: 87317-51167, Kashan, I.R. Iran.authorFatemehKianiDepartment of Organic Chemistry, Faculty of Chemistry, University of Kashan, P.O. Box: 87317-51167, Kashan, I.R. Iran.authorMohsenMoradianInstitute of Nanoscience and Nanotechnology, University of Kashan, Kashan, P.O. Box: 87317-51167, I.R. Iran.authortextarticle2013engMethanesulfonic acid (MSA) was found to be an efficient catalyst for the synthesis of 1-substituted-1H-1,2,3,4-tetrazoles. A series of 1-substituted tetrazole compounds were synthesized from the reaction of various primary amines, sodium azide and triethyl orthoformate in the presence of catalytic amounts of MSA at room temperature. In this protocol, some of the tetrazole derivatives were synthesized in good to excellent yields and convenient reaction times. This method has the advantages of simple methodology and easy work-up.Iranian Journal of CatalysisIslamic Azad University, Shahreza Branch2252-02363

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2013243247http://ijc.iaush.ac.ir/article_4974_b609151e412fb8d32e530f18bfbf2165.pdfSpotlights: Fétizon’s reagent: Silver carbonate on celiteFatemehKarimi TabarFaculty of Chemistry, University of Bu-Ali Sina, 65178, Hamedan, Iran.authortextarticle2013engFatemeh Karimi Tabar was born in Asadabad/Hamedan (Iran) in 1986. She completed her B.Sc. in chemistry in 2008 from Bu-Ali Sina University, Hamedan, Iran. She was graduated from M.Sc. degree in organic chemistry from Shiraz University 2010, Shiraz, Iran. She is currently Organic Chemistry Ph.D student under the supervision of prof. M.A. Zolfigol and prof. A. Khazaei in department of chemistry at Bu-Ali Sina University, Hamedan, Iran. Her research interest is organic chemistry transformation. She is interested in applying the Fétizon’s reagent for the oxidation of various organic functional groups.Iranian Journal of CatalysisIslamic Azad University, Shahreza Branch2252-02363

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2013249250http://ijc.iaush.ac.ir/article_5073_da25ac837079f3b0de6fd195fc1a3ac7.pdfSpotlights: Modified polyvinylpyridineLalehSamaviThe college of chemistry, University of Guilan , Rasht 41335-19141, Iran.authortextarticle2013engLaleh Samavi was born in Rasht,Iran in 1979. She received her B.Sc. (2002) and M.Sc. (2005) degrees from the university of Guilan. Presently she is working towards her Ph.D. degree under supervision of Prof. Farhad Shirini at the University of Guilan. Her research is focused on the development of synthetic rout of catalysts and their applications in organic chemistry.Iranian Journal of CatalysisIslamic Azad University, Shahreza Branch2252-02363